In Brazzaville, 'invisible forces' rule the world. The monk Medard tries to heal the sick victims of evil spells. But he is accused of practicing black magic and causing a lightning strike that led to the death of children.

Medard adheres to traditional beliefs based on ancestral spirits, magical beings and spells. Directors Hadrien La Vapeur and Corto Vaclav follow their Medard as he works.

"The mystical and captivating film KONGO does not judge, but casts a benevolent eye on all the characters filmed, leaving the audience to form its own opinion on the relevance or ridiculousness of these rites and beliefs." (Abus de Cine)